The Rail Accident Investigation Branch (RAIB) has released preliminary findings regarding a train derailment that occurred near Lewes. According to the report, investigators discovered a specific track defect or "irregularity" located on the approach to the site where the train left the tracks.

While the RAIB has confirmed the presence of this defect, the investigation remains in its early stages. Officials have not yet concluded whether this track condition was the primary cause of the derailment or a contributing factor among other potential variables. The report serves as an initial assessment, and further technical analysis is expected to follow as the investigation proceeds. The site remains under scrutiny as engineers and safety inspectors work to understand the sequence of events leading up to the accident. No further details regarding the nature of the defect or the specific train involved have been released at this time.